Talks between the exiled anchor and NBCUniversal have recently become tense — with the 55-year-old newsman saying he will not have his “NBC Nightly News” job taken away without a battle, The Post has learned.

“Brian is saying he’s not going down without a fight and [is] threatening to make it really ugly — worse than Ann Curry,” a source close to NBC told The Post.

Three days later, a pro-Williams report surfaced saying NBC News boss Andy Lack was looking for ways to save his beleaguered anchor.

On Tuesday, the anti-Williams faction seemed to fight back — telling the Hollywood Reporter that Lack is not convinced Williams can return.

And so it goes.

Williams was suspended in February without pay until August after he claimed — in an apparent attempt to beef up his war zone bona fides — to have been on an aircraft that took enemy fire. That claim was later shot down.

Without a doubt, there is an increasing urgency within NBCUniversal management ranks to bring the prickly situation to an end.

“ABC World News Tonight,” hosted by David Muir, said Tuesday that for the last four weeks it led “NBC Nightly News” in total viewers — the first time that has happened in years.

ABC also won for the third straight week in the key 25- to 54-year-old demographic sought by advertisers — though NBC is ahead season-to-date.

As talks between Williams and Comcast’s NBCUniversal unit heat up, Williams is believed to be trying to ensure that he is entitled to a payout under the five-year, $10 million-per-year deal he signed last year.

“They are not going to give him an opportunity to do an Ann Curry,” said a source familiar with news management.

“NBC seems intent on damaging him,” said a friend of Williams. “No one is speaking out in his defense.”

Meanwhile, NBC News has said no decisions have been made about Williams’ future and several staff tell The Post they are conflicted about their colleague, saying that he deserves punishment but also that he is a talented, popular professional.

NBC star Lauer has had several dinners with Williams to discuss the situation and is supportive of his friend, a source told The Post.